Nice job Ironman,looks like a very nice project.I am in need of a ball turner as well,nothing fancy just need it to work.I'm a beginner and would like to know alittle more details.Being a beginner I do not know what the cutting tool is called or anything bout it,could you explain alittle bout it?Did you make the part that the insert is mounted on and did you weld it to the part that slides for adjusting the size of the ball?Is your material just mild steel or something special?I really like the ball bearings,did you use just a setscrew to push the bearing into place?Guess its a 3/8 ball bearing, I also have a 12" Sears/Atlas lathe which I really just started using it and want to add your ball turner.I have some knobs to make from maybe 5/8 dia on up to maybe 2-3" dia.Thanks for posting your project,it has fired me up to get busy----kroll